Weather Records on 21 September 1927

165 weather records were set or tied worldwide on 21 September 1927. Highest significance: Gronbaek-Allingskovgard, DK.

Key Facts for 21 September 1927

On 21 September 1927, 165 weather records were set or tied at long-record stations worldwide.
42 were record highs and 101 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 159 daily.
Gronbaek-Allingskovgard set a monthly record daily precipitation of 65.7 mm (2.6 in) on 21 September 1927.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 453 records.

Record Map

165 stations

165 station records on 21 September 1927 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1927: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gronbaek-Allingskovgard	Denmark	Record daily precipitation	65.7 mm (2.6 in)	60 of 100 (Major)
Tranebjerg	Denmark	Record daily precipitation	26.5 mm (1.0 in)	53 of 100 (Notable)
Neerim	Australia	Record daily precipitation	46.2 mm (1.8 in)	43 of 100 (Notable)
Saint Leo	United States	Record daily precipitation	78.2 mm (3.1 in)	41 of 100 (Notable)
Armagh	United Kingdom	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)
Carthage	United States	Record low minimum temperature	0.0 C (32.0 F)	23 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record daily precipitation	21.5 mm (0.8 in)	20 of 100 (Routine)
Kristianstad	Sweden	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Karlshamn	Sweden	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Falsterbo	Sweden	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Lund	Sweden	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Halmstad	Sweden	Record daily precipitation	23.7 mm (0.9 in)	20 of 100 (Routine)
Nidingen A	Sweden	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Atyrau	Kazakhstan	Record daily precipitation	3.7 mm (0.15 in)	20 of 100 (Routine)
Owen Sound	Canada	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Ljungby	Sweden	Record daily precipitation	20.5 mm (0.8 in)	20 of 100 (Routine)
Olands Sodra Udde	Sweden	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Biskra	Algeria	Record high maximum temperature	40.0 C (104.0 F)	20 of 100 (Routine)
State UNIV	United States	Record low minimum temperature	2.8 C (37.0 F)	20 of 100 (Routine)
Elko Rgnl AP	United States	Record high minimum temperature	10.6 C (51.1 F)	19 of 100 (Routine)
Tizi Ouzou	Algeria	Record high maximum temperature	41.0 C (105.8 F)	18 of 100 (Routine)
Boulia Airport	Australia	Record high maximum temperature	39.4 C (102.9 F)	17 of 100 (Routine)
Gunnedah Pool	Australia	Record high maximum temperature	30.0 C (86.0 F)	17 of 100 (Routine)
Zagreb-Gric	Croatia	Record high minimum temperature	17.6 C (63.7 F)	17 of 100 (Routine)
Bardstown	United States	Record low minimum temperature	0.0 C (32.0 F)	17 of 100 (Routine)
Fayette	United States	Record low minimum temperature	0.6 C (33.1 F)	17 of 100 (Routine)
Vestervig	Denmark	Record daily precipitation	17.8 mm (0.7 in)	16 of 100 (Routine)
Cet Central England	United Kingdom	Record high minimum temperature	14.1 C (57.4 F)	16 of 100 (Routine)
Corvallis State UNIV	United States	Record high minimum temperature	13.3 C (55.9 F)	16 of 100 (Routine)
Portland Rfc City	United States	Record high minimum temperature	15.0 C (59.0 F)	16 of 100 (Routine)
Charleville Post Office	Australia	Record high maximum temperature	37.2 C (99.0 F)	15 of 100 (Routine)
Kremsmuenster	Austria	Record high maximum temperature	23.6 C (74.5 F)	15 of 100 (Routine)
1 N McLeansboro	United States	Record low minimum temperature	0.6 C (33.1 F)	15 of 100 (Routine)
Huntington	United States	Record low minimum temperature	1.1 C (34.0 F)	15 of 100 (Routine)
Scott	United States	Record low minimum temperature	1.7 C (35.1 F)	15 of 100 (Routine)
Shelbyville 1 E	United States	Record low minimum temperature	-0.6 C (30.9 F)	15 of 100 (Routine)
Oelrichs	United States	Record low minimum temperature	-3.3 C (26.1 F)	15 of 100 (Routine)
Cairns Post Office	Australia	Record low minimum temperature	10.6 C (51.1 F)	14 of 100 (Routine)
Karlsruhe	Germany	Record high maximum temperature	26.4 C (79.5 F)	14 of 100 (Routine)
Sheffield	United Kingdom	Record high minimum temperature	13.9 C (57.0 F)	14 of 100 (Routine)
Brooksville Chin Hill	United States	Record high minimum temperature	24.4 C (75.9 F)	14 of 100 (Routine)
Walnut	United States	Record low minimum temperature	1.1 C (34.0 F)	14 of 100 (Routine)
Washington 1 W	United States	Record low minimum temperature	1.7 C (35.1 F)	14 of 100 (Routine)
Broken Bow 2 W	United States	Record low minimum temperature	-2.8 C (27.0 F)	14 of 100 (Routine)
Curtis	United States	Record low minimum temperature	-2.8 C (27.0 F)	14 of 100 (Routine)
Waynesville	United States	Record low minimum temperature	2.2 C (36.0 F)	14 of 100 (Routine)
New Martinsville 4 NNE	United States	Record low minimum temperature	3.3 C (37.9 F)	14 of 100 (Routine)
Fort National	Algeria	Record high maximum temperature	34.0 C (93.2 F)	13 of 100 (Routine)
Columbus	United States	Record low minimum temperature	-1.1 C (30.0 F)	13 of 100 (Routine)
Vincennes 4 E	United States	Record low minimum temperature	3.3 C (37.9 F)	13 of 100 (Routine)
New Hampton	United States	Record low maximum temperature	12.8 C (55.0 F)	13 of 100 (Routine)
Greensburg	United States	Record low minimum temperature	-1.1 C (30.0 F)	13 of 100 (Routine)
Irvington	United States	Record low minimum temperature	2.2 C (36.0 F)	13 of 100 (Routine)
Leitchfield 2 N	United States	Record low minimum temperature	2.2 C (36.0 F)	13 of 100 (Routine)
Marion	United States	Record low maximum temperature	17.8 C (64.0 F)	13 of 100 (Routine)
Mt Sterling	United States	Record low maximum temperature	17.8 C (64.0 F)	13 of 100 (Routine)
Owensboro 3ENE	United States	Record low minimum temperature	0.6 C (33.1 F)	13 of 100 (Routine)
Georgetown 2 E	United States	Record high minimum temperature	25.6 C (78.1 F)	13 of 100 (Routine)
St George	United States	Record high maximum temperature	37.8 C (100.0 F)	13 of 100 (Routine)
Georgetown Post Office	Australia	Record high maximum temperature	37.2 C (99.0 F)	12 of 100 (Routine)

Counts by Type and Timescale

165 records

Records set or tied on 21 September 1927 by type: Highest daily maximum 24, Lowest daily maximum 16, Highest daily minimum 18, Lowest daily minimum 85, Heaviest daily rainfall 22.

Records on 21 September 1927 by type
Record type	Records
Highest daily maximum	24
Lowest daily maximum	16
Highest daily minimum	18
Lowest daily minimum	85
Heaviest daily rainfall	22
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1927 by timescale: all-time 0, monthly 6, daily 159.

How Much Records Were Beaten By

128 broken records

Margins by which the 128 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 50.8. Ties are not counted.

Top 20 by Significance

21 September 1927

Top 20 records on 21 September 1927 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1927	Gronbaek-Allingskovgard, DK	monthly rain	65.7 mm (2.6 in)	19.0 mm (0.7 in)	47 years	60 of 100 (Major)
21 September 1927	Tranebjerg, DK	daily rain	26.5 mm (1.0 in)	20.7 mm (0.8 in)	29 years	53 of 100 (Notable)
21 September 1927	Neerim, AU	daily rain	46.2 mm (1.8 in)	32.7 mm (1.3 in)	17 years	43 of 100 (Notable)
21 September 1927	Saint Leo, US	daily rain	78.2 mm (3.1 in)	50.8 mm (2.0 in)	25 years	41 of 100 (Notable)
21 September 1927	Armagh, GB	daily rain	30.2 mm (1.2 in)	10.9 mm (0.4 in)	27 years	36 of 100 (Notable)
21 September 1927	Carthage, US	monthly low min	0.0 C (32.0 F)	1.7 C (3.1 F)	24 years	23 of 100 (Routine)
21 September 1927	Koebenhavn: Landbohojskolen-1, DK	daily rain	21.5 mm (0.8 in)	17.0 mm (0.7 in)	28 years	20 of 100 (Routine)
21 September 1927	Kristianstad, SE	daily rain	21.3 mm (0.8 in)	9.4 mm (0.37 in)	28 years	20 of 100 (Routine)
21 September 1927	Karlshamn, SE	daily rain	19.3 mm (0.8 in)	7.8 mm (0.31 in)	28 years	20 of 100 (Routine)
21 September 1927	Falsterbo, SE	daily rain	14.5 mm (0.6 in)	8.7 mm (0.34 in)	16 years	20 of 100 (Routine)
21 September 1927	Lund, SE	daily rain	18.3 mm (0.7 in)	0.5 mm (0.02 in)	63 years	20 of 100 (Routine)
21 September 1927	Halmstad, SE	daily rain	23.7 mm (0.9 in)	6.7 mm (0.26 in)	29 years	20 of 100 (Routine)
21 September 1927	Nidingen A, SE	daily rain	11.4 mm (0.4 in)	5.2 mm (0.20 in)	41 years	20 of 100 (Routine)
21 September 1927	Atyrau, KZ	daily rain	3.7 mm (0.15 in)	3.7 mm (0.15 in)	45 years	20 of 100 (Routine)
21 September 1927	Owen Sound, CA	daily rain	20.6 mm (0.8 in)	10.2 mm (0.4 in)	26 years	20 of 100 (Routine)
21 September 1927	Ljungby, SE	daily rain	20.5 mm (0.8 in)	5.4 mm (0.21 in)	29 years	20 of 100 (Routine)
21 September 1927	Olands Sodra Udde, SE	daily rain	10.2 mm (0.4 in)	5.2 mm (0.20 in)	28 years	20 of 100 (Routine)
21 September 1927	Biskra, DZ	daily high max	40.0 C (104.0 F)	2.0 C (3.6 F)	38 years	20 of 100 (Routine)
21 September 1927	State UNIV, US	monthly low min	2.8 C (37.0 F)	1.6 C (2.9 F)	10 years	20 of 100 (Routine)
21 September 1927	Elko Rgnl AP, US	daily high min	10.6 C (51.1 F)	5.6 C (10.1 F)	8 years	19 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1805 to 1927

Records set or tied on this calendar date in each year from 1805 to 1927. 1927 had 165 records.

Counts for years before the ledger starts come from the same station rules.

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	591
2026	478

Download the Data

Data for records on 1927-09-21: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	121
10 to 20	4
20 to 30	1
30 to 40	1
40 to 50	0
50 to 60	1